HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Philadelphia

$457+ Cheap flights from Heathrow (LHR) to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
Jul 26 — Aug 21
Sun 7/26
Sun 8/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Heathrow to Philadelphia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from London Heathrow to Philadelphia are usually found in September or November, booked 74 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from Heathrow to Philadelphia

Cheapest flights from Heathrow to Philadelphia
Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2026.

This Air Canada deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:30 am
LHR
-
PHL
1 stop30h 34m
Air Canada
Sun 7/510:45 am
PHL
-
LHR
2 stops29h 15m
Air Canada
Deal found 6/25$821
This Rumbo deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/139:30 am
LHR
-
PHL
1 stop11h 35m
Multiple Airlines
Mon 7/205:40 pm
PHL
-
LHR
2 stops18h 25m
Multiple Airlines
Deal found 6/25$822
This TravelUp deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:40 am
LHR
-
PHL
1 stop28h 28m
JetBlue
Tue 8/259:25 am
PHL
-
LHR
1 stop16h 05m
JetBlue
Deal found 6/26$824
This British Airways deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:10 pm
LHR
-
PHL
Nonstop8h 05m
British Airways
Mon 11/236:35 pm
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 6/25$825
This The Travel House deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:40 pm
LHR
-
PHL
1 stop22h 05m
Lufthansa
Mon 8/245:40 pm
PHL
-
LHR
1 stop16h 00m
Lufthansa
Deal found 6/25$827
This Finnair deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:15 am
LHR
-
PHL
Nonstop8h 00m
Finnair
Mon 7/1310:15 pm
PHL
-
LHR
Nonstop7h 05m
Finnair
Deal found 6/23$828
This British Airways deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:10 pm
LHR
-
PHL
Nonstop8h 05m
British Airways
Wed 11/46:35 pm
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 6/22$829
This KAYAK deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:15 am
LHR
-
PHL
Nonstop8h 00m
British Airways
Tue 7/213:26 pm
PHL
-
LHR
1 stop13h 49m
British Airways
Deal found 6/24$830
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:15 am
LHR
-
PHL
Nonstop8h 00m
Iberia
Tue 7/145:30 pm
PHL
-
LHR
1 stop9h 30m
Iberia
Deal found 6/25$832
This Finnair deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:20 am
LHR
-
PHL
2 stops34h 15m
Finnair
Mon 11/91:00 pm
PHL
-
LHR
1 stop14h 15m
Finnair
Deal found 6/22$833

Find flight deals from Heathrow to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$821
(Scandinavian Airlines)

One-way from

$458
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$982

Good round-trip deal

$824 or less

Good one-way deal

$645 or less
Provider with most accurate pricing for London Heathrow-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Philadelphia flights.
Search Deals
From London Heathrow to Philadelphia
Search Deals
One-way flight from London Heathrow to Philadelphia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($132 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Philadelphia.
Search Deals
Price to beat on a one-way flight from London Heathrow to Philadelphia.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 26, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 12/3

10:35 am-1:50 pm

Nonstop8h 15m

Philadelphia

Mon 12/7

6:35 pm-6:35 am

Nonstop7h 00m

$827

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 9/2

1:45 pm-4:40 pm

Nonstop7h 55m

Philadelphia

Sun 9/6

7:35 pm-7:50 am

Nonstop7h 15m

$845

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 7/15

7:30 am-4:05 pm

1 stop13h 35m

Philadelphia

Tue 10/13

6:15 am-5:55 am

2 stops18h 40m

$914

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 8/21

6:40 am-10:16 pm

2 stops20h 36m

Philadelphia

Tue 8/25

1:15 pm-4:25 pm

3 stops22h 10m

$947

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 7/24

7:30 am-6:54 pm

2 stops16h 24m

Philadelphia

Fri 7/31

10:39 am-6:45 am

2 stops15h 06m

$971

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 10/26

6:30 pm-7:39 am

3 stops41h 09m

Philadelphia

Sun 11/1

6:00 am-12:40 pm

2 stops25h 40m

$975

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 10/7

7:05 am-8:07 pm

3 stops18h 02m

Philadelphia

Wed 10/21

1:20 pm-2:35 pm

3 stops20h 15m

$985

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 7/20

2:10 pm-12:57 am

1 stop15h 47m

Philadelphia

Mon 8/3

3:10 pm-9:20 am

2 stops13h 10m

$1,004

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 7/24

7:30 am-4:05 pm

1 stop13h 35m

Philadelphia

Mon 7/27

6:10 am-10:00 am

2 stops22h 50m

$1,015
Quickest round-trip

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 8/4

9:15 am-12:15 pm

Nonstop8h 00m

Philadelphia

Tue 12/1

6:35 pm-6:35 am

Nonstop7h 00m

$1,055

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Heathrow to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Philadelphia in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Heathrow with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Philadelphia

How far ahead should I book a flight from London Heathrow Airport to Philadelphia?

The best time to book flights from London Heathrow Airport to Philadelphia is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $712). Flying from London Heathrow Airport to Philadelphia in July is currently the most expensive (average of $1,008). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to PHL?

Find hourly flight availability from Heathrow to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 26, 2026.

When flying from London Heathrow Airport to Philadelphia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from London Heathrow Airport to Philadelphia?

The best insider tips for London Heathrow Airport to Philadelphia flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Philadelphia trip
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated June 26, 2026.
Peruse reviews from past customers who have flown with Aer Lingus,American Airlines, andBritish Airways from London Heathrow Airport to Philadelphia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,626 reviews

Crew

8.1

Overall

7.3

Food

6.6

Comfort

7.2

Boarding

7.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.3
Good
1,626 reviews
Aer Lingus
7.3
Good
1,626 reviews

Crew

8.1

Overall

7.3

Food

6.6

Comfort

7.2

Boarding

7.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
American Airlines
7.1
Good
11,769 reviews
Aer Lingus
7.3
Good
1,626 reviews

Crew

8.1

Overall

7.3

Food

6.6

Comfort

7.2

Boarding

7.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
British Airways
6.7
Okay
8,071 reviews
Aer Lingus
7.3
Good
1,626 reviews

Crew

8.1

Overall

7.3

Food

6.6

Comfort

7.2

Boarding

7.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from London Heathrow?

    Most people fly into Philadelphia (PHL) if they book a flight to Philadelphia from London Heathrow. On average, Philadelphia has 15 inbound flights from London Heathrow per day from 3 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How long is the flight from London Heathrow Airport to Philadelphia?

    Departing from London Heathrow Airport to Philadelphia will take you 8h 05m. The distance between London Heathrow Airport and Philadelphia is about 3533 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Philadelphia round-trip?

    Flying on American Airlines is currently your cheapest option to Philadelphia, with prices starting at $610. Additional round-trip tickets that might be worth considering are offered by British Airways and Aer Lingus, with the lowest prices starting at $614 and $670, respectively. American Airlines is currently priced 27% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from London Heathrow Airport to Philadelphia one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $483. American Airlines flights start at $490 while deals on Finnair start at $493 one-way.

  • What are the most reliable airlines from London Heathrow Airport to Philadelphia?

    Before booking your flight to Philadelphia from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Malaysia Airlines (89%), American Airlines (85%), Finnair( 85%).

  • What are the cheapest flights from London Heathrow Airport to Philadelphia?

    Looking for the cheapest flight from London Heathrow Airport to Philadelphia? While on average our users pay $1,592, our data indicates the cheapest price to be $587. The most popular route (London Heathrow - Philadelphia), is priced around $455.

  • Can I find deals for flights from Heathrow to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Heathrow to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Philadelphia.

  • Can I find deals for business class flights from Heathrow to Philadelphia?

    Yes. Cheapflights offers flight deals from Heathrow to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $712). Flying from London Heathrow Airport to Philadelphia in July is currently the most expensive (average of $1,008). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
King of Prussia
Reading
Camden
Ocean City
Plymouth Meeting
Cherry Hill
Lewes
Wyomissing
Dewey Beach
Pottstown
Ephrata
Milford
Wildwood Crest
Dover
Elkton
Essington
Willow Grove
New Castle
Millville

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Heathrow to Philadelphia

Discover the top 3 airlines that operate flights from Heathrow to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$610Average$814FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$614Average$783FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$670Average$1,017FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.